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88662389 = 520917021
BaseRepresentation
bin1010100100011…
…10000101110101
320011211111221012
411102032011311
5140144144024
612444202005
72124421634
oct522160565
9204744835
1088662389
1146058402
1225839305
13154a416a
14babd51b
157bb550e
hex548e175

88662389 has 4 divisors (see below), whose sum is σ = 88684620. Its totient is φ = 88640160.

The previous prime is 88662359. The next prime is 88662419. The reversal of 88662389 is 98326688.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (88662359) and next prime (88662419).

It can be written as a sum of positive squares in 2 ways, for example, as 86583025 + 2079364 = 9305^2 + 1442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-88662389 is a prime.

It is a super-2 number, since 2×886623892 = 15722038446374642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88662319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (22171155).

Almost surely, 288662389 is an apocalyptic number.

It is an amenable number.

88662389 is a deficient number, since it is larger than the sum of its proper divisors (22231).

88662389 is a wasteful number, since it uses less digits than its factorization.

88662389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230.

The product of its digits is 995328, while the sum is 50.

The square root of 88662389 is about 9416.0707835062. The cubic root of 88662389 is about 445.9092447403.

The spelling of 88662389 in words is "eighty-eight million, six hundred sixty-two thousand, three hundred eighty-nine".

Divisors: 1 5209 17021 88662389